Adafruit Industries
A range of development boards for education and hobby useAdafruit develops a range development boards for the education and hobbyist markets like the Circuit Playground, a board with an Atmel ATmega32u4 microcontroller and a number of sensors, and the Adafruit CLUE which includes a IPS TFT display.
Arduino/C/C++ is the classic way for makers to write code for microcontrollers but you can also use Makecode/Javascript and CircuitPython, depending on the board in use.
